diff --git a/bin/6to5-node b/bin/6to5-node
index e473816114..5cfde69d5e 100755
--- a/bin/6to5-node
+++ b/bin/6to5-node
@@ -1,83 +1,2 @@
 #!/usr/bin/env node
-
-var commander = require("commander");
-var util      = require("../lib/6to5/util");
-var path      = require("path");
-var repl      = require("repl");
-var to5       = require("../lib/6to5");
-var vm        = require("vm");
-var _         = require("lodash");
-
-commander.option("-e, --eval [script]", "evaluate script");
-commander.option("-p, --print", "evaluate script and print result");
-commander.option("-i, --ignore [regex]", "ignore all files that match this regex when using the require hook");
-commander.option("-x, --extensions [extensions]", "list of extensions to hook into [.es6,.js]", util.list);
-
-var pkg = require("../package.json");
-commander.version(pkg.version);
-commander.usage("[options] [ -e script | script.js ] [arguments]");
-commander.parse(process.argv);
-
-//
-
-var registerOpts = {};
-
-if (commander.ignore) {
-  registerOpts.ignoreRegex = new RegExp(commander.ignore);
-}
-
-if (commander.extensions && commander.extensions.length) {
-  registerOpts.extensions = commander.extensions
-}
-
-to5.register(registerOpts);
-
-//
-
-var _eval = function (code, filename) {
-  code = to5.transform(code, { filename: filename, blacklist: ["useStrict"] }).code;
-  return vm.runInThisContext(code, filename);
-};
-
-if (commander.eval) {
-  var result = _eval(commander.eval, "eval");
-  if (commander.print) console.log(result);
-} else {
-  var filenames = commander.args;
-
-  if (filenames.length) {
-    _.each(filenames, function (filename) {
-      if (!util.isAbsolute(filename)) {
-        filename = path.join(process.cwd(), filename);
-      }
-
-      require(require.resolve(filename));
-    });
-  } else {
-    replStart();
-  }
-}
-
-function replStart() {
-  repl.start({
-    prompt: "> ",
-    input: process.stdin,
-    output: process.stdout,
-    eval: replEval,
-    useGlobal: true
-  });
-}
-
-function replEval(code, context, filename, callback) {
-  var err;
-  var result;
-
-  try {
-    code = code.slice(1, -2); // remove "(" and "\n)"
-    result = _eval(code, filename);
-  } catch (e) {
-    err = e;
-  }
-
-  callback(err, result);
-}
+require("v8-argv")("--harmony", __dirname + "/_6to5-node");
diff --git a/bin/_6to5-node b/bin/_6to5-node
new file mode 100644
index 0000000000..78f0f2fafe
--- /dev/null
+++ b/bin/_6to5-node
@@ -0,0 +1,86 @@
+#!/usr/bin/env node
+
+var commander = require("commander");
+var util      = require("../lib/6to5/util");
+var path      = require("path");
+var repl      = require("repl");
+var to5       = require("../lib/6to5");
+var vm        = require("vm");
+var _         = require("lodash");
+
+commander.option("-e, --eval [script]", "evaluate script");
+commander.option("-p, --print", "evaluate script and print result");
+commander.option("-i, --ignore [regex]", "ignore all files that match this regex when using the require hook");
+commander.option("-x, --extensions [extensions]", "list of extensions to hook into [.es6,.js]", util.list);
+
+var pkg = require("../package.json");
+commander.version(pkg.version);
+commander.usage("[options] [ -e script | script.js ] [arguments]");
+commander.parse(process.argv);
+
+//
+
+var registerOpts = {};
+
+if (commander.ignore) {
+  registerOpts.ignoreRegex = new RegExp(commander.ignore);
+}
+
+if (commander.extensions && commander.extensions.length) {
+  registerOpts.extensions = commander.extensions;
+}
+
+to5.register(registerOpts);
+
+//
+
+var _eval = function (code, filename) {
+  code = to5.transform(code, { filename: filename, blacklist: ["useStrict"] }).code;
+  return vm.runInThisContext(code, filename);
+};
+
+if (commander.eval) {
+  var result = _eval(commander.eval, "eval");
+  if (commander.print) console.log(result);
+} else {
+  var filenames = commander.args;
+
+  if (filenames.length) {
+    _.each(filenames, function (filename) {
+      if (!util.isAbsolute(filename)) {
+        filename = path.join(process.cwd(), filename);
+      }
+
+      require(require.resolve(filename));
+    });
+  } else {
+    replStart();
+  }
+}
+
+function replStart() {
+  repl.start({
+    prompt: "> ",
+    input: process.stdin,
+    output: process.stdout,
+    eval: replEval,
+    useGlobal: true
+  });
+}
+
+function replEval(code, context, filename, callback) {
+  var err;
+  var result;
+
+  try {
+    if (/^\((.*?)\n\)$/.test(code)) {
+      code = code.slice(1, -2); // remove "(" and "\n)"
+    }
+
+    result = _eval(code, filename);
+  } catch (e) {
+    err = e;
+  }
+
+  callback(err, result);
+}
diff --git a/package.json b/package.json
index 97a8983734..9077d52502 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,8 @@
     "source-map-support": "0.2.7",
     "esutils": "1.1.4",
     "acorn-6to5": "https://github.com/sebmck/acorn-6to5/archive/master.tar.gz",
-    "estraverse": "^1.7.0"
+    "estraverse": "^1.7.0",
+    "v8-argv": "^0.2.0"
   },
   "devDependencies": {
     "istanbul": "0.3.2",